archival,a.|ˈɑːkɪvəl, ɑːˈkaɪvəl| [f. next + -al1.] Of or pertaining to archives. 1847in Craig.1903Daily Chron. 5 Mar. 3/2 His photographs and his archival researches.1962Unesco Bull. for Libraries XVI. 9 Archival material is usually recorded for preference on roll microfilm.